In Spanish Castle Magic, what car was Jimi Hendrix referring to?

If you've ever listened to Spanish Castle Magic, there's a line in the song where Jimi sings "It's very far away, takes about a half a day...IF YOU TRAVEL BY DRAGONFLY" I understand what he's talking about there was him and his friends would travel to the Spanish Castle dance hall way back when in Seattle I believe. Anyhow the car they traveled in wasn't very reliable and I believe what he refers to as "Dragonfly" in that tune was the car they traveled in. Thus for a long time now, I've been wondering what car could that be?